ASTROSAT CZTI

Data Quality Report

Orbit 13762

Creation date: 2024-06-27T16:45:44.238490
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_062T01_9000002038_13762cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13762cztM0_level2_quad_clean.evt
Size (bytes)476,438,40094,092,480
Size454.4 MB 89.7 MB
Events in quadrant A3,233,187595,051
Events in quadrant B3,455,815588,930
Events in quadrant C3,220,613625,224
Events in quadrant D4,089,272597,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138803
B0146642
C0136922
D0164002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333400.631612%
B6333781.231644%
C6333300.473709%
D63332083.284383%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7464 6335 6 6 0.08% 0.09%
B 7464 6335 9 9 0.12% 0.14%
C 7464 6335 1 1 0.01% 0.02%
D 7464 6335 93 93 1.25% 1.47%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 23 111467 678.0 801 784 163.2
A 0 226 14151 81.88 801 784 163.2
A 8 15 13779 79.6 801 784 163.2
B 0 219 153545 1009.86 800 781 151.3
B 4 142 43535 282.63 800 781 151.3
B 4 216 42612 276.53 800 781 151.3
C 3 233 100499 535.48 799 807 186.2
C 13 61 5688 26.22 799 807 186.2
C 7 238 3841 16.3 799 807 186.2
D 5 222 683198 3567.47 782 759 191.3
D 13 249 184432 960.16 782 759 191.3
D 10 157 139277 724.11 782 759 191.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter